194925191 has 2 divisors, whose sum is σ = 194925192. Its totient is φ = 194925190.

The previous prime is 194925187. The next prime is 194925197. The reversal of 194925191 is 191529491.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 194925191 - 2² = 194925187 is a prime.

It is a super-3 number, since 3×194925191³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194925197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97462595 + 97462596.

It is an arithmetic number, because the mean of its divisors is an integer number (97462596).

Almost surely, 2^194925191 is an apocalyptic number.

194925191 is a deficient number, since it is larger than the sum of its proper divisors (1).

194925191 is an equidigital number, since it uses as much as digits as its factorization.

194925191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 41.

The square root of 194925191 is about 13961.5611949381. The cubic root of 194925191 is about 579.8148348677.

The spelling of 194925191 in words is "one hundred ninety-four million, nine hundred twenty-five thousand, one hundred ninety-one".